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Introduction to SQL

Introduction to SQL
Indexes can usually be created for both primary and secondary keys.

False
True

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Introduction to SQL
Which of the following is valid SQL for an Index?

ADD INDEX ID;
CHANGE INDEX ID;
REMOVE INDEX ID;
CREATE INDEX ID;

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Introduction to SQL
Which SQL statement is used to update data in a database?

SAVE AS
SAVE
UPDATE
MODIFY

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Introduction to SQL
The ADD command is used to enter one row of data or to add multiple rows as a result of a query.

True
False

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Introduction to SQL
The SQL -92 wildcards are ____ and ____ .

asterisk (*); percent sign (%)
percent sign (%); underscore (_)
underscore(_); question mark (?)
question mark (?); asterisk (*)

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Introduction to SQL
ON UPDATE CASCADE ensures which of the following?

Materialized Views
Normalization
Data Integrity
All of these

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